Open source project to develop geopolymer cast stone construction

Bill McNulty’s 2nd Patent

Another post introduced Bill McNulty’s cast stone method. This post is about his second patent — a second process that explains how to make other types of cast stone with sodium carbonate.

Abstract: Inorganic cementitious material
A method of producing a new type of cement, hereafter called Conch-krete. Conch-krete is created by adding sodium carbonate (also known as soda ash, natron, etc.) and one or more minerals from the calcium carbonate group (including aragonite, limestone, calcite, marble, dolomite, etc.) and the addition of water to the mix that will harden into a cement-like material. The combination of sodium carbonate and calcium carbonate can be either layered or in a mixed state. An exothermic reaction starts after the addition of water. The composition of Conch-krete can vary between 20% sodium carbonate and 80% calcium carbonate to 80% sodium carbonate and 20% calcium carbonate. Conch-Icrete can be used in a variety of applications not inclusive of forming bricks, interior architecture, table or counter tops, ornaments, repairing damaged cement products, casting and other applications not mentioned above.
Inventors: McNulty, Jr.; William J. (Provo, TC)
Appl. No.: 09/456,841
Filed: December 7, 1999

Interesting updates:
– Teresa, one of our readers, has learned sodium carbonate (also called soda ash or washing soda) is used in swimming pools. Check swimming pool suppliers for prices.
– Sam, another reader, told me by email that the military has thoroughly tested geopolymer in sand bag fortifications. Makes sense, doesn’t it? Can anyone legally track down the military reports that explain the process in detail?